Updated Upstream (Bukkit/CraftBukkit/Spigot)

Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Please note that this build includes changes to meet upstreams
requirements for nullability annotations. While we aim for a level of
accuracy, these might not be 100% correct, if there are any issues,
please speak to us on discord, or open an issue on the tracker to
discuss.

Bukkit Changes:
9a6a1de3 Remove nullability annotations from enum constructors
3f0591ea SPIGOT-2540: Add nullability annotations to entire Bukkit API

CraftBukkit Changes:
8d8475fc SPIGOT-4666: Force parameter in HumanEntity#sleep
8b1588e2 Fix ExplosionPrimeEvent#setFire not working with EnderCrystals
39a287b7 Don't ignore newlines in PlayerListHeader/Footer

Spigot Changes:
cf694d87 Add nullability annotations

Spigot-Server-Patches/Improve-death-events.patch

@@ -15,7 +15,7 @@ items and experience which is otherwise only properly possible by using
 internal code.
 
 diff --git a/src/main/java/net/minecraft/server/CombatTracker.java b/src/main/java/net/minecraft/server/CombatTracker.java
-index bbd5e2b2..19750cee 100644
+index bbd5e2b2a..19750ceed 100644
 --- a/src/main/java/net/minecraft/server/CombatTracker.java
 +++ b/src/main/java/net/minecraft/server/CombatTracker.java
 @@ -0,0 +0,0 @@ public class CombatTracker {
@@ -27,7 +27,7 @@ index bbd5e2b2..19750cee 100644
          int i = this.f ? 300 : 100;
  
 diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
-index c29d7eeb..acd89649 100644
+index c29d7eeb0..acd89649c 100644
 --- a/src/main/java/net/minecraft/server/Entity.java
 +++ b/src/main/java/net/minecraft/server/Entity.java
 @@ -0,0 +0,0 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
@@ -55,7 +55,7 @@ index c29d7eeb..acd89649 100644
          return SoundCategory.NEUTRAL;
      }
 diff --git a/src/main/java/net/minecraft/server/EntityArmorStand.java b/src/main/java/net/minecraft/server/EntityArmorStand.java
-index 2c54e3e3..a5cc5e28 100644
+index 2c54e3e34..a5cc5e284 100644
 --- a/src/main/java/net/minecraft/server/EntityArmorStand.java
 +++ b/src/main/java/net/minecraft/server/EntityArmorStand.java
 @@ -0,0 +0,0 @@ public class EntityArmorStand extends EntityLiving {
@@ -69,7 +69,7 @@ index 2c54e3e3..a5cc5e28 100644
      }
  
 diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
-index 10d95d30..f48ddbc6 100644
+index 10d95d306..f48ddbc68 100644
 --- a/src/main/java/net/minecraft/server/EntityLiving.java
 +++ b/src/main/java/net/minecraft/server/EntityLiving.java
 @@ -0,0 +0,0 @@ public abstract class EntityLiving extends Entity {
@@ -206,7 +206,7 @@ index 10d95d30..f48ddbc6 100644
          return this.isBaby() ? (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.5F : (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.0F;
      }
 diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
-index 13409c04..b01fffbd 100644
+index dc72538de..62feadc8a 100644
 --- a/src/main/java/net/minecraft/server/EntityPlayer.java
 +++ b/src/main/java/net/minecraft/server/EntityPlayer.java
 @@ -0,0 +0,0 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
@@ -257,7 +257,7 @@ index 13409c04..b01fffbd 100644
          }
      }
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftSound.java b/src/main/java/org/bukkit/craftbukkit/CraftSound.java
-index 17fab031..ee8219e3 100644
+index 17fab031b..ee8219e3b 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftSound.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftSound.java
 @@ -0,0 +0,0 @@ public enum CraftSound {
@@ -284,7 +284,7 @@ index 17fab031..ee8219e3 100644
          this.minecraftKey = minecraftKey;
      }
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 07b9545e..a2eae5d1 100644
+index 7a5d0176b..da54a4529 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 @@ -0,0 +0,0 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
@@ -305,7 +305,7 @@ index 07b9545e..a2eae5d1 100644
  
      public void injectScaledMaxHealth(Collection<AttributeInstance> collection, boolean force) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
-index 93da4c72..054ebc82 100644
+index 93da4c726..054ebc82b 100644
 --- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
 +++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
 @@ -0,0 +0,0 @@ public class CraftEventFactory {